Drive for a freight elevator, in particular for a stair climber for the handicapped

Abstract

A drive assembly for a freight elevator or a stair climber for the handicapped is guided on at least one supporting waling or spar. A driving strip is disposed on the supporting waling or spar. According to one embodiment, the driving strip has recesses formed therein at equal intervals. A load-receiving configuration has a motor-driven drive wheel and drive elements are adapted to the recesses for form-lockingly engaging the drive wheel with the recesses. According to another embodiment, squared blocks of constant length are secured to the supporting waling or spar at equal spacings. A load-receiving configuration has a motor-driven drive wheel and drive elements are adapted to the spacings of the blocks for form-lockingly engaging the squared blocks with the drive wheel.

I claim: 
     
       1. A freight elevator drive assembly, comprising: at least one supporting waling;   a driving strip disposed on said supporting waling, said driving strip having recesses formed therein at equal intervals;   a load-receiving configuration having a motor-driven drive wheel; and   drive elements being adapted to said recesses for form-lockingly engaging said drive wheel with said recesses;   said driving strip having an outer edge and said recesses being formed in said outer edge in the shape of a U with parallel sides.   
     
     
       2. The drive assembly according to claim 1, wherein said driving strip has an inner edge opposite said outer edge, and said inner edge has notches formed therein at equal intervals. 
     
     
       3. The drive assembly according to claim 2, wherein said driving strip has webs between said recesses, said webs have centers at which bores are formed at right angles to a lengthwise extension of said driving strip, and said notches terminate in said bores. 
     
     
       4. A drive assembly for a stair climber for the handicapped, comprising: at least one supporting waling;   a driving strip disposed on said supporting waling, said driving strip having recesses formed therein at equal intervals;   a load-receiving configuration having a motor-driven drive wheel; and   drive elements being adapted to said recesses for form-lockingly engaging said drive wheel with said recesses;   said driving strip having an outer edge and said recesses being formed in said outer edge in the shape of a U with parallel sides.   
     
     
       5. A freight elevator drive assembly, comprising: at least one supporting waling;   squared blocks of constant length being secured to said supporting waling at equal spacings;   a load-receiving configuration having a motor-driven drive wheel; and   drive elements being adapted to said spacings of said blocks for form-lockingly engaging said squared blocks with said drive wheel.   
     
     
       6. A drive assembly for a stair climber for the handicapped, comprising: at least one supporting waling;   squared blocks of constant length being secured to said supporting waling at equal spacings;   a load-receiving configuration having a motor-driven drive wheel; and   drive elements being adapted to said spacings of said blocks for form-lockingly engaging said squared blocks with said drive wheel.